Massachusetts wins the historical-sites quiz. But some of America's most famous historic places aren't in that table at all — and knowing why makes you better at reading any ranking.
The Census table behind that quiz counts business establishments with paid employees. Historic places that are run by the government are mostly outside what it covers.
Basis: U.S. Census Bureau, County Business Patterns: the program's coverage excludes most government employers.
That leaves a lot of history out of the table. The National Park Service looks after battlefields, forts, monuments and historic homes across the country, and states, counties and towns run many more.
Basis: The National Park Service is the federal agency that cares for national parks, battlefields, monuments and historic sites.
So a state can be full of history and still not top this table — and a state can rank high partly because so many of its old houses and heritage villages are run as businesses that sell tickets.
Basis: Follows from the coverage rule above: the table ranks businesses, not history.
Why does Massachusetts have so many of them? It was one of the earliest English colonies, its towns are old and packed close together, and local historical societies have been saving buildings there for a very long time. Which of those matters most, a business table simply can't tell us.
※ A hypothesis is an idea that isn't proven yet.
📊 Sources for the rankings mentioned in this note (links to the original data and retrieval dates) are on each quiz page below.